1991 GMC Sonoma CLUTCH

GORAMS

MEMBER
1991 GMC SONOMA

Transmission problem
1991 GMC Sonoma 6 cyl Two Wheel Drive Automatic

I have a 91 sonoma it has been sitting for a while and we just painted it and got in it to drive it and the clutch went to the floor. It was working fine when we parked it to paint it. There is no pedal. I changed the resevoir and the slave cylinder with no change. I feel that we did not bleed it correctly. Can you please tell me if there is something else that needs to be done and the proper bleeding of the slave cylinder. Maybe I did it wrong or something. I am a single mother with a 15 yr old and this is going to be his truck and we are having to do all the work by ourselves with no funds to help out. I would love to donate but have no means to do so.

4 Replies

MHPAUTOS

MECHANIC
31,938 POSTS

Hi there,

if you have replaced the master and slave cylinder, you will require to bleed all the air from the system, make sure that the reservoir is full, get a length of hose that will fit over the bleeder, and you will need a container (glass, so you can see into it) and extra brake fluid.

Add some to the jar and open the bleeder, fit the hose, clear plastic is best, over the bleeder and into the brake fluid in the jar, press down on the pedal, look for air bubbles in the jar. Keep the tube in the jar as this will stop any air entering back into the slave, lift the pedal and wait a second before pressing down again. Do this as may times as you need to eliminate all bubbles, making sure that the reservoir does not get below 1/2 full at least. With no bubbles, lock off bleeder and you should have a good pedal.

Thank you for using 2carpros,

Feedback is always welcome.

Mark (mhpautos)

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Sunday, November 22nd, 2009 AT 4:00 AM

GORAMS

MEMBER
2 POSTS

Thank you for your answer to my question. I need to ask another please. The pedal is not on the floor but, wouldn't the rod from the master cylinder prevent it from going to the floor. You can just push it up and down with no resistance. We have bled the clutch numerous times to no prevail. The pedal just does not get tight. You can not even crank it. One day it is good we drive it in the garage and go to drive it out and pedal goes to floor. Like I said it has been sitting for sometime. You can change the gears without the clutch in or out. I am at a lost we went through a bottle and a half of fluid trying to bleed this darn thing. Thanks Renee

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Sunday, November 22nd, 2009 AT 7:09 PM

MHPAUTOS